@article{02166322,
title = {Fundamental groupoids of },
journal = {The New York Journal of Mathematics [electronic only]},
volume = {10},
year = {2004},
pages = {195-207},
zbl = {1064.05073},
language = {en},
url = {http://dml.mathdoc.fr/item/02166322}
}
Pask, David; Quigg, John; Raeburn, Iain. Fundamental groupoids of . The New York Journal of Mathematics [electronic only], Tome 10 (2004) pp. 195-207. http://gdmltest.u-ga.fr/item/02166322/